link man page on FreeBSD

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LN(1)			  BSD General Commands Manual			 LN(1)

     ln, linklink files

     ln [-L | -P | -s [-F]] [-f | -iw] [-hnv] source_file [target_file]
     ln [-L | -P | -s [-F]] [-f | -iw] [-hnv] source_file ... target_dir
     link source_file target_file

     The ln utility creates a new directory entry (linked file) for the file
     name specified by target_file.  The target_file will be created with the
     same file modes as the source_file.  It is useful for maintaining multi‐
     ple copies of a file in many places at once without using up storage for
     the “copies”; instead, a link “points” to the original copy.  There are
     two types of links; hard links and symbolic links.	 How a link “points”
     to a file is one of the differences between a hard and symbolic link.

     The options are as follows:

     -F	   If the target file already exists and is a directory, then remove
	   it so that the link may occur.  The -F option should be used with
	   either -f or -i options.  If none is specified, -f is implied.  The
	   -F option is a no-op unless -s option is specified.

     -L	   When creating a hard link to a symbolic link, create a hard link to
	   the target of the symbolic link.  This is the default.  This option
	   cancels the -P option.

     -P	   When creating a hard link to a symbolic link, create a hard link to
	   the symbolic link itself.  This option cancels the -L option.

     -f	   If the target file already exists, then unlink it so that the link
	   may occur.  (The -f option overrides any previous -i and -w

     -h	   If the target_file or target_dir is a symbolic link, do not follow
	   it.	This is most useful with the -f option, to replace a symlink
	   which may point to a directory.

     -i	   Cause ln to write a prompt to standard error if the target file
	   exists.  If the response from the standard input begins with the
	   character ‘y’ or ‘Y’, then unlink the target file so that the link
	   may occur.  Otherwise, do not attempt the link.  (The -i option
	   overrides any previous -f options.)

     -n	   Same as -h, for compatibility with other ln implementations.

     -s	   Create a symbolic link.

     -v	   Cause ln to be verbose, showing files as they are processed.

     -w	   Warn if the source of a symbolic link does not currently exist.

     By default, ln makes hard links.  A hard link to a file is indistinguish‐
     able from the original directory entry; any changes to a file are effec‐
     tively independent of the name used to reference the file.	 Directories
     may not be hardlinked, and hard links may not span file systems.

     A symbolic link contains the name of the file to which it is linked.  The
     referenced file is used when an open(2) operation is performed on the
     link.  A stat(2) on a symbolic link will return the linked-to file; an
     lstat(2) must be done to obtain information about the link.  The
     readlink(2) call may be used to read the contents of a symbolic link.
     Symbolic links may span file systems and may refer to directories.

     Given one or two arguments, ln creates a link to an existing file
     source_file.  If target_file is given, the link has that name;
     target_file may also be a directory in which to place the link; otherwise
     it is placed in the current directory.  If only the directory is speci‐
     fied, the link will be made to the last component of source_file.

     Given more than two arguments, ln makes links in target_dir to all the
     named source files.  The links made will have the same name as the files
     being linked to.

     When the utility is called as link, exactly two arguments must be sup‐
     plied, neither of which may specify a directory.  No options may be sup‐
     plied in this simple mode of operation, which performs a link(2) opera‐
     tion using the two passed arguments.

     The -h, -i, -n, -v and -w options are non-standard and their use in
     scripts is not recommended.  They are provided solely for compatibility
     with other ln implementations.

     The -F option is FreeBSD extention and should not be used in portable

     link(2), lstat(2), readlink(2), stat(2), symlink(2), symlink(7)

     The ln utility conforms to IEEE Std 1003.2-1992 (“POSIX.2”).

     The simplified link command conforms to Version 2 of the Single UNIX
     Specification (“SUSv2”).

     An ln command appeared in Version 1 AT&T UNIX.

BSD				 July 17, 2009				   BSD

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